The master box says 350C on the outside, but when I went to pack some, they are actually 250C. So I have new and used 250C, and used 350C Cindy Croxton Electronics Plus 1613 Water Street Kerrville, TX 78028 (830)792-3400 phone (830)792-3404 fax AOL IM elcpls _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.3343 / Virus Database: 3184/6348 - Release Date: 05/22/13